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Issue 26, 2016
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Characterisation of the surface of freshly prepared precious metal catalysts

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Abstract

A combination of electron microscopy, X-ray and neutron spectroscopies and computational methods has provided new insights into the species present on the surface of freshly prepared precious metal catalysts. The results show that in all cases, at least half of the surface is metallic or nearly so, with the remainder covered by oxygen, largely as hydroxide. Water is also present and is strongly held; weeks of pumping under high vacuum is insufficient to remove it. The hydroxyls are reactive as shown by their reaction with or displacement by CO and can be removed by hydrogenation. This clearly has implications for how precious metal catalysts are activated after preparation.

Graphical abstract: Characterisation of the surface of freshly prepared precious metal catalysts

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Article information


Submitted
15 Feb 2016
Accepted
09 Mar 2016
First published
09 Mar 2016

This article is Open Access

Phys. Chem. Chem. Phys., 2016,18, 17196-17201
Article type
Paper
Author version available

Characterisation of the surface of freshly prepared precious metal catalysts

S. F. Parker, D. Adroja, M. Jiménez-Ruiz, M. Tischer, K. Möbus, S. D. Wieland and P. Albers, Phys. Chem. Chem. Phys., 2016, 18, 17196
DOI: 10.1039/C6CP01027J

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